Answers are grounded in this paper and cite their sources.
Journal Article Pest Status of Insects and Mites on Pear in Southern Oregon Get access P. H. Westigard P. H. Westigard Oregon State University, Southern Oregon Experiment Station, Medford 97501 Search for other works by this author on: Oxford Academic PubMed Google Scholar Journal of Economic Entomology, Volume 66, Issue 1, 1 February 1973, Pages 227–232, https://doi.org/10.1093/jee/66.1.227 Published: 01 February 1973 Article history Received: 08 June 1972 Published: 01 February 1973
No takes yet. Share an insight, caveat, or question.
P. H. Westigard (1973) studied this question.
Synapse has enriched 10 related papers. Consider them for comparative context: